Finding the Fourth Proportional to 145,998.62, 201,430.92 and 81,457.40
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Solution
The fourth proportional to 145,998.62, 201,430.92 and 81,457.40 is: 112,384.88
Step by Step Solution
- Step 1: Write the proportion equation
145,998.62 : 201,430.92 = 81,457.40 : x - Step 2: Convert to fraction form
145,998.62/201,430.92 = 81,457.40/x - Step 3: Cross multiply
145,998.62x = 201,430.92 × 81,457.40 - Step 4: Simplify right side
145,998.62x = 16,408,038,015.65 - Step 5: Solve for x
x = 16,408,038,015.65/145,998.62 - Step 6: Final answer
x = 112,384.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.